Typewriting machine



Jan. 17, 1928. 1,656,640

A. G. F. KURowsKi TYPEWHITING MACHINE Filed Aug.. 29. 1923 Patented Jan. 17, 1928.

UNITED srarss sa.*raar1 :cette ALFRED G. l?. HROWSKI, OF BRKLYM, NEVI YRK, AEfSG--OR UNDEBWOOD v."fjti'llil-` WRITER COMPANY, F NEW YQRK, N.

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'rrrnwnrrrne Mnczeinn. l

Application led August 29,

\ This invention relates to an improvement in means for retaining a typewriting machine and sound deadening casingtherefor' on a baseboard or desk. Usually, typewrit- 5 ing machines have been retained by a firm direct connection between the machine and the supporting base, thereby affording, through the retaining device `to `the baseboard, a conducting path for the vibrations due to typing on the machine. f

An object of the present invention is to eliminate the possibility of transmitting vibrations from the casing through theretai-ning-device and thereafter to the baseboard, and thereby prevent the sound produced by the operation of the machine from reaching the exterior of the casing. The retainingdevice may consist of means fixed to the machine-frame, and other means in spaced relation to the first means, slidably mounted on the baseboard, These'means loosely interlock each other, but are not in contact, so that the typewriter and casing have no metallic connection with the support-ing base, and thereby permits the usual feet of soft rubber or the like, interposing the machine, casing and the baseboard, to absorb the transmitted sound vibration.

A further object of the present invention is to provide simple, easy andnovel fastening means for instantly unlocking the retaining device at the will of the operator, to allow the removal of the casing and enclosed machine from the base, for cleaning or other purposes. One part yof the retaining means is rigidly attached to the machine and may consist of one or more downwardly-adjustable projecting studs passing through the casing and each having a head for insertion yinto a keyhole slot in a corresponding slidable part mounted on the baseboard. This mounted part may consist of a metal strip having a plurality of elongated slots1 preferably one on each side of the keyhole slot, and may have Wood screws passing through the slots for holding the strip to the desk or base. The screws are not inserted all the way down but enough play may be left to permit the strip to slide in the slots, The strip may also have a raised portion in which the keyhole slots are punched.

The base or support may be counterbored with a cavity for clearance of each stud-head.

1923.` Serial No. 659,872.'

machine into a back part of the desk, as is a common practice, the retaining device holds the machine locked to both casing and supporting base.

The retaining device, to give ythe most effective cooperative arrangement with the casing, machine and base, may preferably be `located and installed to interlock in a transverse direction to the tilting of the base.

@ther features and advantages will hereinafter appear. .i

In the accompanying drawings, M

Figure lis a plan view of the device, showing a section of the stud-bolts in locked position. i

`ligure 2 is Va` front elevation of the device as applied to an Underwood typewriting machine frame, showing -a part insection to clearly expose lthe interlocking stud-bolt and its retaining support. o i

' Figure 3 is a side View` of the device as shown in Figure 2. f

In `the embodiment illustrated in the drawings, the. baseboard or support l, which may be part of a desk and conventionally arranged so as to enable the same to be tilted forwardly orrearwardly orto be moved to an inclined position, may `have disposed thereon `an Underwood typewriting machine 2 which stands on the usual soft rubberfeet 3, and the machine placed in a sound-deadening casing 20,-which may be of the character such as disclosed in the application of Cornelius B. Corcoran, Serial No. 604,468, filed December 2, 1922 now Patent No. 1,509,828, of SeptemberSO, 1924, having a shell 21, a lining ofsound-dampening material 22gand rubber feet 23, prior tok mounting on the supporting base l.

Retaining means may be provided on `both sides of the machine comprising stud-bolts 4, each having a head 5, and said stud bolts 4 projecting upwardly may be threaded into the lug 6 of the typewriting machine trame 2, and is provided with a locking nut 7 for keeping the stud-bolts 4 from moving at'ter being properly adjusted.

Each stud-head may be adapted to be inserted into the large opening ot a keyhole slot 8 on the raised portion 9 of the strip 10 which may be slidably mounted on base 1 as by means of screws 11, one on each side ot the raised portion 9. The screws l1 pass through.perforated elongated slots 12, in the strip 10. Enough play is left by the slots 12 to permit the strip 10 to slide on the base 1. Thestrip l() may preferably be arranged to slide transverse to the direction of the tilting ofthe base, and a suitable handle 13 is usually provided to facilitate sliding the strip 10.

When the machine and its enclosedcasings are to be retained on the supporting base, the studfheads 5 of the stud-bolts l areiinserted intor the large openings of the keyhole slots 8 in the strip 10 when the latter is positioned as far to the left as the slots 12 in strip 10 and screws 11 permit, seeFigure 1. The handle 13 may then be drawn to the right carrying strip 10 slidingly alone. Each stud-hea 5 will then be positioned under the smaller openingof the keyhole slot 8 for preventing the machine and easing from being lifted oli `the supporting base 1, as shown in Figures 1 and 2. The base l may be counterbored as at 14 to allow clearance tor the stud-heads 5f lVhile the machine is in horizontal position, as shown in Figure 2,` there is no direct connection between the stud-bolts l and the strip 10, but, as soon as the support is tilted forwardly or rearwardly, each studhead 5 of the bolts 4 will co-operatively interlock with the side of the small opening of keyhole slot 8 in strip 10 to retain `the machine and casing to the base 1.

Referring to Figure 2, it will be seen that the feet 3 of the typewriter rest upon the bottom wall of the sound-deadening casing E20, while the-feet 23 of said casing rest upon the supporting base, and, by reason of the loose connection between themachine and base, direct transmission of sounds generated within the casing are prevented from reaching the exterior thereof, the feet 3 and 23 effecting a double cushioning action to absorb all vibration produced.

To remove thevmachine from the base-support 1 while in horizontal position, the han die 13 is simply pushed to the right o'f- .that shown in Figure 1, whereby thelarge opening of the key-hole slot 8 is again moved over the stud-head 5. The machine and casing may then be lifted off the supporting base.

In order `to retain the strip 10 in the position against accidental, displacement any common locking means may be provided, as a fiat spring 15 rigidly fastened to the base 1 by screws 1G. A projection 1T on the spring 15 is situated in the path ot' the de tout holes 18 to fit into the same and releasably holds the strip in either et' its extreme sliding positions.

Variations may be resorted to within the scope ol the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. A deviceto secure a typewriting machineand a` sound-deadening casing enclosing the machine on a tiltable support there` for, including normally interlocking securingmembers attached to the machine and support respectively, one of the securing members being, attached within said casing to the machine and projected through said asing at a point where it may contact with and engage the other member, the other securing member movably mounted on said support in a position where it. will contact with and engage said hist-mentioned member when said support is tilted, and thereupon securing the machine and said casing on said support as tilted, said members being normally out of contact in the typing position of the machine, so as to avoid conducting sounds of the operation of `the ma chine 'trom within said sound-dearlening casing to the outside thereof to said support, and a handle on the movable member for moving` said member on said support from said normal position'toa position to release the other member, to permit withdrawal of the machine from the support.

2. A non-resonant device` tosecure a typewriting machine and a sound-deadening casing enclosng the machine on a `support therefor when said support is tilted, the machine resting on its feet on said casing andthe latter provided with setuid-absorbing feet and resting on its feet on said support, said securing device includingl members attached to the machine and support respectively, one of said members attached within said casing to the machine and projected through said casing to `engagesaid other securing member, the latter movably mounted on said support for movement on the support to interlock normally with the first securing member, and a handle on the movable member for shitting saidmember on said support to release .the first securing member and permit withdrawal ot the machine ;trom the support.

3. A device to secure a typewriting machine on its tiltable support, including stud-bolts fixed to the machine one at each side thereof and extending downwardly therefrom and `with the heads ofthe bolts projected below the base of the machine, and a one-piece strip laid on the support and having raised portions near each end of said strip :1nd keyhole slot-s in said raised portions in which the heads of said bolts are inserted, said members being normally not in contactengagenilent with each other dur-V ing the typewritng operation to escape conducting sounds of the machine through said members to the support, but nevertheless in an interloeked position in respect to each other during the typewritng operation for 10 l Contact engagement with each other when the support is tilted, and serving by said Contact engagement to secure the machine on the support, and means slidably attach ing` said strip to the support.

ALFRED G. F. KUROWSKI. 

